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<fieldset class="layui-elem-field layui-field-title" style="margin-top: 20px;">
  <legend>信息流 - 滚动加载</legend>
</fieldset>
 
<ul class="flow-default" id="LAY_demo1"></ul>
 
<fieldset class="layui-elem-field layui-field-title" style="margin-top: 50px;">
  <legend>信息流 - 手工加载</legend>
</fieldset>
 
<ul class="flow-default" style="height: 300px;" id="LAY_demo2"></ul>
 
<fieldset class="layui-elem-field layui-field-title" style="margin-top: 50px;">
  <legend>图片懒加载</legend>
</fieldset>
<div class="site-demo-flow" id="LAY_demo3">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
  <img lay-src="../../res.layui.com/upload/2017_3/168_1488985841996_23077.png" tppabs="https://cdn.layui.com/upload/2017_3/168_1488985841996_23077.png">
</div>
 
<p style="margin-top: 20px;">
  无论滚动条上滑还是下滑，都只始终加载当前屏的图片（你可以快速拉动滚动条到中间区域，然后再往上滑动试试）
  <br>layui 的图片懒加载，除了对滚动条的性能进行了美好的优化，也对图片的「当前屏」进行了高效计算，无惧于任何规模庞大的图片数量！
</p>             
          </div>
          
<blockquote class="layui-elem-quote" style="margin-top: 30px;">
  更多我们未能呈现的示例，还有待您在阅读文档、以及不断使用的过程，去深入挖掘。
</blockquote>
<div style="margin: 15px 0 100px; padding-bottom: 100px;">

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<textarea class="layui-border-box site-demo-text site-demo-code" id="LAY_democode" spellcheck="false" readonly>
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>镜像站@Layui</title>
  <meta name="renderer" content="webkit">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
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  <!-- 注意：如果你直接复制所有代码到本地，上述css路径需要改成你本地的 -->
</head>
</textarea>
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<script>
window.global = {
  pageType: 'demo'
  ,preview: function(){
    var preview = document.getElementById('LAY_preview');
    return preview ? preview.innerHTML : '';
  }()
};
</script>

<div class="site-tree-mobile layui-hide">
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}).use('global');
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</div>
<div id="LAY_democodejs">
<script>
layui.use('flow', function(){
  var flow = layui.flow;
 
  flow.load({
    elem: '#LAY_demo1' //流加载容器
    ,scrollElem: '#LAY_demo1' //滚动条所在元素，一般不用填，此处只是演示需要。
    ,done: function(page, next){ //执行下一页的回调
      
      //模拟数据插入
      setTimeout(function(){
        var lis = [];
        for(var i = 0; i < 8; i++){
          lis.push('<li>'+ ( (page-1)*8 + i + 1 ) +'</li>')
        }
        
        //执行下一页渲染，第二参数为：满足“加载更多”的条件，即后面仍有分页
        //pages为Ajax返回的总页数，只有当前页小于总页数的情况下，才会继续出现加载更多
        next(lis.join(''), page < 10); //假设总页数为 10
      }, 500);
    }
  });
  
  flow.load({
    elem: '#LAY_demo2' //流加载容器
    ,scrollElem: '#LAY_demo2' //滚动条所在元素，一般不用填，此处只是演示需要。
    ,isAuto: false
    ,isLazyimg: true
    ,done: function(page, next){ //加载下一页
      //模拟插入
      setTimeout(function(){
        var lis = [];
        for(var i = 0; i < 6; i++){
          lis.push('<li><img lay-src="../../../res.layui.com/upload/2017_3/168_1488985841996_23077.png?v='+ ( (page-1)*6 + i + 1 ) +'"></li>')
        }
        next(lis.join(''), page < 6); //假设总页数为 6
      }, 500);
    }
  });
  
  //按屏加载图片
  flow.lazyimg({
    elem: '#LAY_demo3 img'
    ,scrollElem: '#LAY_demo3' //一般不用设置，此处只是演示需要。
  });
  
});
</script>
</div>
</body>
</html>